Home / 85,689-179,136

Finding the Third Proportional to 85,689 and 179,136

Calculator

Solution

The third proportional to 85,689 and 179,136 is: 374,490.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,689 : 179,136 = 179,136 : x
  2. Step 2: Convert to fraction form
    85,689/179,136 = 179,136/x
  3. Step 3: Cross multiply
    85,689x = 179,136 × 179,136
  4. Step 4: Simplify right side
    85,689x = 32,089,706,496
  5. Step 5: Solve for x
    x = 32,089,706,496/85,689
  6. Step 6: Final answer
    x = 374,490.38

Related Problems

Find third proportional to 42,844.50 and 89,568
Half scale
Find third proportional to 171,378 and 358,272
Double scale
Find third proportional to 85,691 and 179,140
Similar ratio
Find third proportional to 128,533.50 and 268,704
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.